package com.hddf.project.interceptor;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.hddf.project.util.Stct;

public class CookieService {

	private static CookieService cookie_service = null;
	// private static UserDao_MongoDB user_dao_mongodb = null;
	// 令牌有效时间 单位是 秒 默认是 3600秒 (1小时)
	// private static final long apptoken_lifetime = 60*60 ;
	static {
		if (cookie_service == null) {
			cookie_service = new CookieService();
		}
		/*
		 * if(user_dao==null){ user_dao = new UserDaoImpl(); }
		 * if(user_dao_mongodb==null){ user_dao_mongodb = new
		 * UserDaoImpl_MongoDB(); }
		 */
	}

	public static CookieService getInstance() {
		return cookie_service;
	}

	/**
	 * 设置cookie
	 * 
	 * @param response
	 * @param name
	 *            cookie名字
	 * @param value
	 *            cookie值
	 * @param maxAge
	 *            cookie生命周期 以秒为单位
	 */
	public void addCookie(HttpServletResponse response, String name, String value, int maxAge) {

		Cookie cookie = new Cookie(name, value);
		// 设置路径，这个路径即该工程下都可以访问该cookie 如果不设置路径，那么只有设置该cookie路径及其子路径可以访问
		cookie.setPath("/");
		// 设置域
		cookie.setDomain(Stct.domain);
		if (maxAge > 0)
			cookie.setMaxAge(maxAge);
		response.addCookie(cookie);
	}

	/**
	 * 根据名字获取cookie
	 * 
	 * @param request
	 * @param name
	 *            cookie名字
	 * @return
	 */
	public Cookie getCookieByName(HttpServletRequest request, String name) {
		Map<String, Cookie> cookieMap = ReadCookieMap(request);
		if (cookieMap.containsKey(name)) {
			Cookie cookie = (Cookie) cookieMap.get(name);
			return cookie;
		} else {
			return null;
		}
	}

	/**
	 * 将cookie封装到Map里面
	 * 
	 * @param request
	 * @return
	 */
	private Map<String, Cookie> ReadCookieMap(HttpServletRequest request) {
		Map<String, Cookie> cookieMap = new HashMap<String, Cookie>();
		Cookie[] cookies = request.getCookies();
		if (null != cookies) {
			for (Cookie cookie : cookies) {
				cookieMap.put(cookie.getName(), cookie);
			}
		}
		return cookieMap;
	}

}
